CVE-2022-38547

Home/CVE/A post-authentication command injection vulnerability in the CLI command of Zyxel ZyWALL/USG series firmware versions 4.

CVE

A post-authentication command injection vulnerability in the CLI command of Zyxel ZyWALL/USG series firmware versions 4.

A post-authentication command injection vulnerability in the CLI command of Zyxel ZyWALL/USG series firmware versions 4.20 through 4.72, VPN series firmware versions 4.30 through 5.32, USG FLEX series firmware versions 4.50 through 5.32, and ATP series firmware versions 4.32 through 5.32, which could allow an authenticated attacker with administrator privileges to execute OS commands.

HIGH · CVSS 7.2 EPSS 0.01466

Schedule remediation

CVSS base score ≥ 7.0

Sigma rules0 YARA rules0

⬡

Weakness Classification

CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

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Affected Products & Versions

zyxel atp100 firmware>= 4.32 and <= 5.32
zyxel atp200 firmware>= 4.32 and <= 5.32
zyxel atp700 firmware>= 4.32 and <= 5.32
zyxel atp500 firmware>= 4.32 and <= 5.32
zyxel atp100w firmware>= 4.32 and <= 5.32
zyxel atp800 firmware>= 4.32 and <= 5.32
zyxel usg flex 50 firmware>= 4.50 and <= 5.32
zyxel usg flex 200 firmware>= 4.50 and <= 5.32
Show all 25 affected productszyxel usg flex 500 firmware>= 4.50 and <= 5.32
zyxel usg flex 700 firmware>= 4.50 and <= 5.32
zyxel usg flex 100w firmware>= 4.50 and <= 5.32
zyxel usg flex 100 firmware>= 4.50 and <= 5.32
zyxel vpn1000 firmware>= 4.30 and <= 5.32
zyxel usg20w-vpn firmware>= 4.30 and <= 5.32
zyxel usg20-vpn firmware>= 4.30 and <= 5.32
zyxel vpn50 firmware>= 4.30 and <= 5.32
zyxel vpn300 firmware>= 4.30 and <= 5.32
zyxel vpn100 firmware>= 4.30 and <= 5.32
zyxel usg40 firmware>= 4.20 and <= 4.72
zyxel usg40w firmware>= 4.20 and <= 4.72
zyxel usg60 firmware>= 4.20 and <= 4.72
zyxel usg60w firmware>= 4.20 and <= 4.72
zyxel zywall 110 firmware>= 4.20 and <= 4.72
zyxel zywall 1100 firmware>= 4.20 and <= 4.72
zyxel zywall 310 firmware>= 4.20 and <= 4.72

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Scoring & Timeline

7.2

HIGH · CVSS v3.1 · security@zyxel.com.tw

View on NVD

Attack Vector

Network Adjacent Local Physical

Attack Complexity

Low High

Privileges Required

None Low High

User Interaction

None Required

Scope

Unchanged Changed

Confidentiality

None Low High

Integrity

None Low High

Availability

None Low High

Published to NVD07 Feb 2023 · 02:15 AM

CVSS VectorCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

SSVC triage · cisa-vulnrichment

Exploitation

none

Automatable

Technical impact

total

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References & Sources

Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.

https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-post-authentication-rce-in-firewallsVendor Advisory

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